Bunsen burner.



No. 733,424. FATBNTBD JULY 14, 1903. A. B. REDBLL. BUNSBN BURNER.AAPPLICATION FILED APB. 22, 1903.

H0 MODEL.

Hulman@ 1 ivo. 733,424.

UNiTED STATES Patented July I4, 190.

'PATENT OFFICE.

ALVIN B. REDELL, OF CHICAGO, ILLINOIS, vASSIGNOR TO CHARLES R. LINDSAY,JR., OF CHICAGO, ILLINOIS.

BUNsEN BURNER.

srn'crrxcATIoN arming part of Letters Patent No. 733,424, dated Jury 14,1903. Application filed April 22, 1903. Serial No. 153,745. (No model.)

To all whom t may concern:

Be it known that I, ALVIN B. REDELL, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Bunsen Burners, of whichthe following is a specification.

This invention relates to Bunsen burners, and refers particularly to animproved construction of such burners whereby a more complete mixture ofair and gas is obtained and a more perfect control of the gas is hadthan is possible in the ordinary Bunsen burner, whereby also the singingnoises common in the operation of these burners is obviated and theiroperation simplified and improved.

In the accompanying drawings, Figure lis a side elevation of a Bunsenburner embodying my invention. Fig. 2 is a transverse section on dottedline 2 2 of Fig. l. Fig. 3 is a Vertical sectional View on dotted line 83 of Fig. 2.

In the embodiment herein shown of my invention I provide an integralbody portion l, comprising an internallyscrew threaded socket 2 at itslower end for securing the burner upon a gas-fixture. The body portionlis further provided with a tubular externally-screw-threaded stem 3,having at its upper end a central gas-discharge opening 4, somewhatsmaller than the internal diameter of said stem,also with a ring5,screwthreaded upon its inner circumference for a purpose to appearlater herein. The ring 5 is supported by the integral side arms 6 and isknurled upon its outer circumference to facilitate securing the burnerupon the gas-fixture. A closurecap 7 is provided for the upper end ofthe tubular stem 3 and has a downwardly-extending tapering closing-pin 8on its interior, adapted to enter and close the gas-discharge opening 4.The closing-pin 8 has a small central perforation 9 to permit thepassage at all times of a small quantity of gas from the tubular stem 3to the Bunsen tube, to be hereinafter described, for maintaining aconstant flame. The closure-cap 7 is internally screw-threaded tocorrespond with the tubular stem 3, upon which it is A Bunsen tube l2,having air-inlet openings 13 in its side walls near its lower end, isprovided with the annular base 14, screwthreaded on its periphery tocorrespond with the screw-threads on the inner face of the ring 5, uponwhich ring the said Bunsen tube is rigidly mounted. A

In use the burner herein described is se cured onto the end of a gasiixture, (not shown,) and the supply of gas entering the closure cap 7is regulated byy turning the knurled flange 1l at the base of said cap.The lian ge ll projects outwardly beneath the ring 5, so that itsperiphery may be grasped by the thumb and finger of the operator.Turning said cap raises or lowers it by reason of its screw-threadconnection with the tubular stem 3 and moves the tapering closing-pin 8out of or into the opening 4 to open said passage or to close it, andthereby to control the flow of gas through said opening. From the cap 7the gas emerges through the openings l0 into the Bunsen tube l2,entering said tube near the lower margin of the air-inlet openings 13and uniting with the air in said tube to form a combustible mixture. Inpractice it has been found that a number of small gasescape openings arepreferable to one large opening, as by the use of a number of openingsthe singing and other disagreeable noises that occur in burners of thisstyle are avoided.

The device herein illustrated and described is susceptible of variousmodifications in the form and arrangement of its parts without adeparture from the spirit and scope of my invention, wherefore I do notlimit myself to the particular construction herein set forth.

I claim as my inventionl. In a Bunsen burner, in combination, an

ICO

integral body portion comprising a tubular stem and a ring,said stemhaving in its upper end a central opening, and said ring beingscrew-threaded upon its inner circumference; a tubularclos11reoap-having ascreW- vthread engagement with said stem andprovided in its upper end with a gaseseape opening, said cap carrying apin adapted to enter and close the 4central opening of the tubular stemgand a Buusen tube having at its lower end an annular base, said basebeing screwthreaded to correspond with the screw-threads upon said ring.

2. In a Bunsen burner, in combination, an integral body portioncomprising a tubular stein and a ring, said stem having in its upper enda central opening; a tubular closurecap having a screw-thread engagementwith said stem and provided in its upper end with a gas-escape opening,said cap carrying a pin having a conical tip adapted to enter and closethe central opening of the tubular stem, Said pin also being perforatedto permit the escape of a small quantity of gas for maintaining aconstant llame; and a Bunsen tube secured to said rino.

3. In a Bunsen burner, in combination, an integral body portioncomprising a socket, a tubular stem and a ring, said stein having in'its upper end a central opening, and said ring being screw-threaded uponits inner circumference; a tubular closure-cap having a screwthreadengagement with said stem and provided in its upper end with a pluralityof gasescape openings, said cap carrying a pin having a conical tipadapted to enter and close the central opening of the tubular stern,said pin also being perforated to permit the escape of a small quantityof gas for maintaining a constant ame; and a Bunsen tube having at itslower end an annular base, said base being screw-threaded to correspondWith the screwthreads upon said ring.

ALVIN B. REDELL.

Witnesses:

L. L. MILLER, GEORGE L. CHINDAHL.

